19.2.4. To rack 2 mass m = 2,5 kg applied force variable F = 9t2. Determine the angular acceleration gear 1 at time t = 1, if the radius r = 0,4 m, the moment of inertia about the rotational axis I1 = 2 kg · m2.

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(DYNAMICS, Chapter 19 - The general equation of dynamics, paragraph - 19.2: Application of general dynamic equations to describe the motion of a system of bodies) of Reshebnik to the collection of short tasks on the theoretical mechanics Kep OE, JA Viba, OP Grapis, JA Svetinysh et al. Publishing Moscow / Graduate School / 1989, 2009, 2012.
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